HEAT-SENSITIVE COLORING INK AND HEAT-SENSITIVE COLORING PLASTIC CARD COATED THEREWITH

摘要

PURPOSE:To obtain a heat-sensitive coloring ink capable of imparting good printings to plastic sheets, by dispersing a phenolic compound and a specific leuco dye in a vehicle consisting of a specified acrylic copolymer. CONSTITUTION:The objective composition obtained by dispersing (A) (i) a phenolic compound and (ii) a leuco dye capable of coloring by reacting with the component (i) while heating in a vehicle prepared by dissolving (B) a copolymer resin consisting of dialkylaminoalkyl (meth)acrylate units and styrene units or tert-butyl (meth)acrylate units in a solvent consisting mainly of an aliphatic hydrocarbon and/or naphthenic hydrocarbon.